How To Unlock: Shoot 5 cable lines using sniper rifles.
There are a few missions where you will come across telegraph lines. Simply snipe any 5 of the cables to unlock this cheevo.
This can easily be done at the start of Mission 6 – On Your Own. Around the corner from the start point is a stretch of telegraph wires. They are on the left side of the path. Your fire will not attract nearby enemies here, so take your time shooting. Aim for the point where the cables connect to the pole. Use your focus to steady your aim. Once you take out five of the connections, the cheevo will pop.